Duplicating apparatus.



937.v j l PATBNTED JUNE'19, 1906. A. Bf'pIoK., A DUPLICATING APPARATUS.

APPLICATION FILBDJAN. 15, 1906.

2 SHEETS-*SHEET 1.

No. 823,937. PATETED JUNE 19, 1906. A. B. DICK. DUPLIGATING APPARATUS. APPLIoATIoN FILED JAN.15, 1906.

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INVENTon ATTORNEY n o o c 9 ,o o c o o n @u o u L n o o WITNEssEs: 1 @Q L MX 1 l UNITED s'rArEs PATENT oEEroE.

ALBERT B. DICK, OF'LAKE FOREST, ILLINOIS, ASSIGNORTO A. B. DICK- 'COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

DUPLICATING APPARATUS.

' .Patented June. 19,v 1906.

i Application filed January 15, 1906. Serial No. 296,177.

Be it known that I, ALBERT B. DICK, a citizen of the Iinited States. residing at Lake Forest, in the county of Lake and State of Illinois. have invented a certain new and useful Improvement in Duplicating Apparat-us, of which the following is a. speciiication.

The invention relates generally to duplicating apparatus, and is adapted particularly for use with that type of such apparatus in which are employed a rotary drum carrying upon its periphery a stencil-sheet and an underlying pressure-roller. between which and are successively passed in or the periphery of such drum im ression-sheets iie'r to imprint thereupon the characters cut inthe stencilsheet.

The object of the invention is to desirably simplify apparatus of this character with respect particularly to the paper-stopping device by means whereof the proper position of the impression-sheetprior to the coaction therewith of the stencil is determined.

In carrying out the invention in a pre` ferred form the pressure-roller, which underlies the stencil-carrying drum, is mounted upon hinged arms operated both by a suitable throw-off mechanism and by a connection with the drum. the former being used .to throwthe pressure-roller to inoperative position when the machine is out of use and the latter permitting the pressure-roller to coact with the drum only at thatpoint of such drum which is covered by the stencil. Carried also by these hinged 'arms is a paperstopping mechanism comprising a bar extending in a plane parallel with the axis of the pressure-roller and in'v close proximity to the periphery of such roller-when in operative position. This bar, or an appurtenance thereof, has a connection with a fixed part of the'apparatus, and due to this connection its movement is interdependent with that of the pressure-roller. one of these being in-operative posit-ion only when t-he'other is in'inoperative position.

The invention 1s illustrated in the acc-om- `panying drawings, in whichv adjacent t0 lthat line and illust-rating the paper-stop in operative position; and-Fig. 4 is al section of certain parts as shown in Fig'. 1. but illustrating the paper-stop in inoperative position.

Referring to the drawings, A designates' carried by a vertically-oscillating bar c6, the

upper end whereof is guided bv having a slot cut therein, through which the `shaft. c eX# tends. D designates a rock-'shaft,the ends whereof are journaled in the side members B B of the fra-me. Adjustably mount-ed upon this shaft is a collar d, secured to or formed integral with which are two arms d d2, the end of the arm d being pivota-Ily secured at da to the' vertically-oscillating bar c6. At the opposite side the rock-shaft D is provided with a collar E. also adjust-ably secured upon said rockshaft, and secured to or formed integral with this is an arm e, similar to the arm di. Each of said arms d2 and e is provided with a lu I e to the free end of which is secured one'en of a coil-spring e2, the .other end of said coil-` spring being secured, as at e3, to the frame of the machine.` The oiiice of the coiI-sprin f is to lyieldingly position the ypressure-rol er, presently described, by holdin the sheave c5, carried by the vertically-osci Iating bar c, in contact with the cam c4.

F desi nates the pressure-roller, the shaft f whereo isjournaled in the arms e di.' G designates the'paper-stop, here shown as comprising a bar supported adjacent, to each end by lmeans of brackets g, the ends whereof are pivoted at g g to the arms e di'. nates a link pivoted at its upper e'nd to an ear formed upon one of the bracketsg 'and at its lower end to a stud g, secured to one of the side members of the frame. may employ a spring g5 for keeping the parts just described under tension and to prevent lthe rattling vthereoffv vAs will be seen, (see particularly Fig. 3,) themovement of the paper-stop Gis dependentupon that of theV pressure-roller F, withwhich said stop coacts in order to determine the degree. of forward g3 desig- IOO movement of the impression-sheet in advance of the printing operation. vSaid stop is shown in the ligure last mentioned, as well as in Figs. 1 and 2, in operative position. Here it opposes the further movement of the impression-sheet h. The pressure-roller F is in inoperative position, being moved thereto'by the engagement of the cam c4 with the sheave c5, carried by the vertically-oscillating bar c6. The continued movement of the drum, and therefore of the cam c4, permits the pressureroller to rise to operative position, in which it is shown in Fig. 4, the same thereby ipping the impression-sheet which is passed om the machine by the coaction of the pressure-roller and the drum and simultaneously imprinted upon. As the pressure-roller -F and therefore the arms e d2 rise to this operative position the paper-stop G and its brackets g g are rocked upon the pivotal point g by reason of the link g3, and thereby thrown to inoperative position, Fig. 4, outof the way of the advancing edge of the impression-sheet.

It will be seen that the mechanism thus described is very simple both in construction and operation, requiring but few parts; but these are positively and reliably actuated to meet the requirements of practical use.

Having now described my invention, what I claim as new therein, and desire to secure by Letters Patent, is as follows:

1. In duplicating apparatus, the combination with a drum and an underlying pressure-roller pivotally mounted in movable arms, of a paper-stop supported. on said arms and movable relatively thereto, substantially as set forth.

2. In duplicating apparatus, the combina- 3. In duplicating apparatus, the combination' with a drum and an underlying ressureroller mounted upon hinged arms, o a paperstop movably carried by said arms, and a connection between said paper-stop and a fixed part of the apparatus, substantially as set forth.

4. In duplicating apparatus, the combination with a drum and an underlying ressureroller mounted upon hinged arms, o a paperstoppivotally mounted upon said arms, and a link pivotally connected at one end to said paper-sto l and pivotally connected at the other en to a fixed part of the apparatus, substantially as st forth.

5. In duplicating apparatus, the combination with a drum, of a rock-shaft, arms carried by said rock-shaft, a pressure-roll er journaled in said arms, a'paper-stop comprising a bar arranged in a plane parallel with the axis of said roller and supported by brackets ivotally connected'with said arms, and a ink movably connected with one of said brackets and with a fixed part of the apparatus,.'sub stantially as set forth.

6. In duplicating apparatus, the combination with a drum, of a rock-shaft, arms carried by said rock-shaft, a pressure-roller journaled in said arms, a paper-stop comprising a bar arranged in a plane parallel with the axis of said roller and supported adjacent to its ends by brackets' pivotally connected with said arms, and a link pivotally connected at one end to one of said brackets at a point disv placed from the longitudinal axis of the bracket and at its other end to a fixed part of the apparatus, substantially as set forth.

This specification signed and witnessed this 11th day of January, 1906.

ALBERT B. DICK. Witnesses:

M. H. BUnKART, R. R. HARRINGTON. 

